NURS 106 Lecture Notes - Lecture 4: Hyperplasia, Ribosomal Rna, Golgi Apparatus
12 Sep 2018
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Document Summary
Mrna is edited before leaving the nucleus. Noncoding sequence (introns = bad) a re removed. *congenital effects and cancer are caused when this step is failed and introns remain. Coding segments (exons = good) are spliced together. Mrna, rrna and trna are used to form a specific protein. Sequence of nucleotides on mrna is read by rrna to construct a protein (with a specific. Anticodons on trna are matched to specific codons on mrna so proper amino acids can be. Each mrna codon translates to one amino acid. Amino acids are delivered by transfer rna (trna) Trna anticodon binds to a complementary mrna codon strung together to create a protein molecule. Proteins pass from rough er to golgi complex in transport vesicles. Finished proteins exit golgi as secretory, membrane or storage vesicle (lysosome) Triplet code - one type of amino acid (e. g. ggg or aga etc. ) Complementary pairing - c-g a-t (or a-u in rna)
